It's probably the cause of the cold. The quality of the medicine given by the veterinarian who looks after your pig is not good, otherwise it will not be bad; There is also a problem of drug compatibility. For colds, Bupleurum injection+vitamin C+ Astragalus polysaccharide can be used, and andrographis paniculata injection can be added if you refuse to eat it. In order to save trouble, some veterinarians only use one medicine or two medicines, which can not achieve the purpose of treatment. Therefore, it is best to combine medication for treatment, and you can't be afraid of trouble! It is best to give sick pigs powdered cold medicine at the same time, so that they will get better faster!